From 435a4a62c03bc3f609d739f4dd4e842c39688e78 Mon Sep 17 00:00:00 2001 From: Wei Fang Date: Thu, 18 Aug 2022 11:00:53 +0800 Subject: [PATCH] dt-bindings: net: ar803x: add disable-hibernation-mode propetry The hibernation mode of Atheros AR803x PHYs defaults to be enabled after hardware reset. When the cable is unplugged, the PHY will enter hibernation mode after about 10 seconds and the PHY clocks will be stopped to save power. However, some MACs need the phy output clock for proper functioning of their logic. For instance, stmmac needs the RX_CLK of PHY for software reset to complete. Therefore, add a DT property to configure the PHY to disable this hardware hibernation mode. Signed-off-by: Wei Fang Reviewed-by: Rob Herring Signed-off-by: Jakub Kicinski --- Documentation/devicetree/bindings/net/qca,ar803x.yaml | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Documentation/devicetree/bindings/net/qca,ar803x.yaml b/Documentation/devicetree/bindings/net/qca,ar803x.yaml index b3d4013b7ca6c..161d289193165 100644 --- a/Documentation/devicetree/bindings/net/qca,ar803x.yaml +++ b/Documentation/devicetree/bindings/net/qca,ar803x.yaml @@ -40,6 +40,14 @@ properties: Only supported on the AR8031. type: boolean + qca,disable-hibernation-mode: + description: | + Disable Atheros AR803X PHYs hibernation mode. If present, indicates + that the hardware of PHY will not enter power saving mode when the + cable is disconnected. And the RX_CLK always keeps outputting a + valid clock. + type: boolean + qca,smarteee-tw-us-100m: description: EEE Tw parameter for 100M links. $ref: /schemas/types.yaml#/definitions/uint32 -- 2.39.5